5.3 Routing and IP Issues

What are routing tables the digital version of?

Digital version of asking for directions.

What happens when the route to the destination network doesn’t exist?

Causing the packet to be dropped.

What will be sent to the source address when the destination doesn’t exist?

ICMP host unreachable message will be sent to the source address.

What is the gateway of last resort?

If there’s not route that doesn’t match where to go, then this is the last static route to use.

What happens when the address pool is exhausted?

Client receives an APIPA address.

How can you add more IP addresses if possible?

Check the DHCP to see if you can add more.

What can IP address management (IPAM) do?

May help in monitoring and reporting an IP address shortage.

Why should you lower the lease time of IP addresses, especially if there are lot of transient users?

It can allow more IP addresses to be allowed.

What is intermittenet connectivity?

Two addresses fighting each other.

What do you do when duplicate IP addresses occur?

Ping it to see if it responds and check the ARP table to find the MAC address.

If you have incorrect IP information, what do you do?

Check your documentation.

Why should you monitor traffic?

Because it can be difficult to determine the subnet mask.

What should you use to figure out the IP and default gateway?

Use traceroute and ping.